3 10.4.5 10.5.2 Choose the correct word. Check in your dictionaries. 1 Finding enough food to feed the world is a big challenge/test. 2 The population on Earth has raised/risen in recent years. 3 Many new businesses are springing up/open up in the area. 4 We need to save/conserve on transport costs. 5 The machine is powered/controlled by solar power. 6 Ulan's busy job sometimes drains/exhausts him of his energy. 7 The farm shop sells fresh produce/outlet such as beans and corn. 8 Fuel prices are advancing/rising at the moment; prices have nearly doubled since last year.

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